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Finding the Fourth Proportional to 557,220.06, 768,963.78 and 302,571.32

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Solution

The fourth proportional to 557,220.06, 768,963.78 and 302,571.32 is: 417,548.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,220.06 : 768,963.78 = 302,571.32 : x
  2. Step 2: Convert to fraction form
    557,220.06/768,963.78 = 302,571.32/x
  3. Step 3: Cross multiply
    557,220.06x = 768,963.78 × 302,571.32
  4. Step 4: Simplify right side
    557,220.06x = 232,666,382,101.97
  5. Step 5: Solve for x
    x = 232,666,382,101.97/557,220.06
  6. Step 6: Final answer
    x = 417,548.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.